Valve rocker arm attachment



1,623 863 Apnl 5 1927' T. H. CADWELL.

.VALVE ROCKER ARM ATTACHMENT Filed May 1. 1925 flaws/14 (k dwZ/ INVENTOR ATTORNEY wrruzss :WW

Patented Apr. 5, 1927.

PATENT OFFICE.

THOMAS H. CADWELL, OF NEW CASTLE, WASHINGTON.

VALVE ROCKER ARM ATTACHMENT.

Application filed May 1,

My invention is an attachment for internal combustion engine valve rocker arms and its principal object is to provide an attachment which will eliminate the noise incident to the operation of the rocker arm and tappet.

The invention also contemplates a spring device for association with the usual valve rocker arm and which is adapted to take up any wear or play that may occur between the ends of the movable part of the valve actuating mechanism.

With the preceding and other objects and advantages in View, the invention consists in the novel combination of elements construction, arrangement of parts and operations, to be hereinafter specifically referred to, claimed and illustrated in the accompanying drawings, wherein Figure 1 is an outline of the rocker arms with the invention associated therewith, the invention being shown in elevation.

Figure 2 is a top plan view, of the structure as shown in Figure 1.

Figure 3 is a perspective of the device per se.

Referring to the drawings in detail wherein corresponding cha acters of reference denote corresponding parts throughout the several views, the numeral 5 designates a conventional rocker arm while 6 and 7 designate the tapped rod and spring of the valve respectively. These parts are conventional and are shown for illustrative purposes only.

The invention consists of a length of resilient wire 10 bent into U-shaped formation intermediate its ends as at 11. The legs of the U-shaped member are coiled or convoluted as at 12 and received about the rocker arm bearings as shown. The end convolution of the coils 12 are bent to provide hooks 1925. Serial NO. 27,246.

15 the latter being arranged in divergent relation with respect to each other and embrace the forward portion of the rocker arms 5.

As shown in Figure l, the U-shaped part 10 contacts with and lies flat upon the head of the internal combustion engine and is thereby held stationary. The rocking of the rockers 5 will take up the force of the blow of the rocker and consequently eliminate noise incident to the end of the rocker striking the valve stems and tappets. Moreover, the device is so constructed as to permit one tappet to operate without being interferred with by the operation of the other and yet function to cushion the operation of both rockers.

l/Vhile I have shown and described the preferred embodiment of the invention, I desire to have it understood that such changes may be made in the form, construction, arrangen'ient of parts and operations, as will not depart from the spirit of the invention or the scope of the subjoined claim.

lVhat is claimed is As a new article of manufacture a length of resilient wire bent intermediate its ends to provide a U-shaped member, adapted to be disposed horizontally, to lie flat upon the head of an internal combustion engine, the legs of the U-shaped member being convoluted and adapted to surround and embrace the bearing mountings of a pair of adjacent parallel arranged rocker arms of the engine, and laterally disposed divergent arranged hooks formed on the ends of the convoluted legs and adapted to embrace the parallel arranged rocker arms.

In testimony whereof I affix my signature.

THOMAS H. CADW ELL. 

